On the aggregator reviews Rotten Tomatoes "Glass" received from critics a disappointing rating of 36% with visual expectations of 97%. Most of the reviewers agreed that the first two acts of the film were too tightened, the climax is not impressive, and the creative experiments of the director are triggered only in half cases.
Rosie Knight from IGN Movies considered that the director throughout the timekeeping could not decide that his film represents: "It is impossible to be fully confident whether the" glass "is a superhero history or psychological thriller. The plot is perceived uneven, and the disappointing third act is not at all satisfying the expectations of the viewer. "
David Erlich from IndieWire noted that M. Knight Syamalan does not use the full potential of his own film. "It was assumed that the" glass "would be his greatest triumph, given how many years he went to the creation of this film. This picture was supposed to make everyone recognize his talent, but it turned out, the director was too fascinated by his story and could not tell her with the same patience and addiction that was present in his first hit. "
But Monica Castillo from The Wrap to the advantages of the film attributed the central trio of heroes. She especially allocated James McEvoy: "Even on the background of veterans such as Bruce Willis and Samuel L. Jackson, McAw's ability to quickly change accents, the tone of the voice and expression of the face creates wonders."
Whether "glass" will be able to repeat the fate of "Votom" and become a hit in the audience, despite the negative reviews of critics, it becomes clear from January 18, 2019.